Tire valve



July 19, 1932. T. A. HAMMOND 1,868,165

TIRE VALVE Filed Nov. 2, 1927 I awuamiioz 'YXWAAQW. kkawwmk 333% 61 Momma 1 Patented July 19, 1932 "UNITED: STAT-Es THEODORE A. HAMMOND, on MON'ICLAIR, NEW JERSEY.

TIRE, VALVE Application filed November 2, 1927. 'Serial No. 230,420.

This invention relates to tire valves.

It is the object of this invention to provide certain improvements in the construction of tire valves, in the seal which they effect, and

in the replacement of the parts thereof as they 7 become worn.

It is'the primary object of this invention to provide a replaceable valve disc for tire valves in such form "that it may be inserted D in the tire valve body whilethe same is in place and without dismounting the parts, or'

replacing the entire valve assembly as was heretofore necessary when repairs were to be effected.

5 It is also the object of thisinvention to provide a new and novel form of valve disc for the purposes described, and to provide novel means for mounting and operating the same when in place.

) A further object of the herein disclosed invention lies in the provision of means whereby the valve seal is supplemented by a secondary sealing means complementary thereto and aiding a perfect air-tight closure.

5 I am aware that replaceable tire valves, or more correctly speaking, tire valves having their disc, stem, seat, and spring arranged as a replaceable unit, are well known to the art, but it is the purpose of my invention to simplify and reduce the cost of the replaceable part, while at the same time increasing the effectiveness of the whole for the purposes for which it is installed.

, The following description, the appended drawing to which it refers, and the claims will more clearly show my invention and make plain certain other improvements thereby accomplished. Figure 1 is a cross sectional elevation of a tire valve body; the valve disc and its pin being shown complete, while a portion only of the valve stem and cup is broken away; Figure 2 is a plan view of the valve stem guide disc.

Referring now to the drawing in detail, the valve body 10 is provided with the usual cap thread 11, the tube engaging flange 12 and certain other features of embodiment upon its exterior after the fashion well known to the art. The interior of valve body 10 is provided with a main bore 14, an inlet bore 16 'and an intermediate reduced} diameter bore 17 at whoseinner end is formed a conicalvalve seat 18. Arranged within. 55

bore 14 is avalve stem guide disc 20 having a valve stem opening 21 and a plurality of air ports 22 surrounding the same. Sliding 1n, this valve stem guide disc is the valve stem25 surrounded by spring27 bearingfl against the valve stem guide disc at its lower end and against the underside of the cup28 at the upper end of the valvestem. Cup 28, the rim of whichis indicated at 30, it will be noted,is'provided witha central recess 32, which terminates in'a bore 33 ex j tending a substantial distance within the valve stem 25 a i The valve disc 40 is preferably o f'soft' readily deformable rubber and is retained upon dlsc pin 42 through suitable meanssuch as, the collars 43 forced over thepin on "either side thereof. Pin 42 is preferably slotted as i at 45.,near its lower end, while adjacent its;

upper endithas a crossbar 4inserted there- T through; 7 H

Consideration of the structure just de scribed will show that cup 28 and itspendent stem 25 is normally pressed upward by spring 27 and that a disc seated within the'cupwill 8 v 7 normally beheld against seat18;It being understood that the air pressure within the tire acting through bore 14 aids the action of the above mentioned spring and that when u tire inflation means are connected to thread.- 8 i 11 that the applicationof pressure-through bore 16a'nd 17 will unseat the valve discto permit air entrance,

.The valve disc is inserted through bores r 16 and 17 by simply grasping th i 42 and forcing the same downward through the 1 constricted bore 17 the valve discof compressible or elastic material being deformed topermit its passageand' immediately reforming upon entering bore 1 14 as shown in Fig. l (which indicatesthe disc 40 just, about to be forced to its seat in recess 30) recess 32 providing space for. the lower collar, while i the split end of pin 42 engaging bore 33 serves to retain the whole in :1l,a'ce.., Thesmall upper end of pin 42 and cross bar 46 provide. means whereby the usual valve cap may be employed as a tool to engage the .pin and force'the disc into place. r

Manifestly the body of'the tire valve and 7 its outward form are subject to many'modifications and have not been shown inidetail herein to avoid surplusage in description. It

I istof a reduceddiameter for providing a valve scat-attheu'pper endof the: part of the-bore therebelow; an apertured' guide discfriction= ally iheld within the bore below said seat, a

valvestein;iireciprocable withinlsaid guide disc,- acup, of non -yieldable material having an internal diameter greaterthan that of the aforesaidflreducedzp'ortio'n of thelbor'e, fixed -to th el upp er end of said stem,. a. springin bearing engagement with said. -apertured disc and saidcupi tosurgeilsaid cup toward said valveseatfa disc: of resilient material having -nature to this specification.

a diameter i-corresponding to that of thein --terior ,rof said 011p, a pin extending through. said'ilatter disc and fixed thereto, whereby said resilient disc. may bepressed through thereduced portion of said bore, substantially the entire area ofxsaid disc being deformable V with saidi'valve seat.

: undercontact-with the wall of thereduced portionof the bore to facilitate its passage,-

nal bore, a portion thereof, adjacent one end, beingof a reduced diameter and providing a dependent valveseat and a valve mechanism positioned within said bore belowsaid seat, said mechanism including a non-flexible ele- 7 ment of a diameter greater than that of the reduced portiongof said bore, a stemidepend-r ingiifrolnsaid element, means associatedawith the inner surface of thelarger portion' of said bore forming a guide for said stem and spring,inter'posed btween said element and said means, adapted to urge said'element towards said seat, all'of said described valve mechanismbeing locatable within said bore "only from the lower end thereof, a body of 8 0 resilient material-l having :a diameter greater than that of the reduced portion ofsaid bore, said body. being insertablethrough .theminor. diameter bore portion by deformation in (mm tact 'with the 1 wall thereof, for. disposition. 65

upon said element in its normallyr lexpandedu condition to cooperate withs aid seat-to seal said bore under the. influence of said: spring. and means PIOJQQtlIlg upwardlyithroughfthem p reduced portion of said bore and ajctuatableifw for depressing said elem'ent I in ioppositionjto: f sa1dsp ring. V.

In test? nony whereof I haveafliXie'd'myLSi HEonoRnrAa therethrough, sai d resilient, disc being locatable #withinisaid cup to-cooperate 'Wlllll said- ,valve seat to sealsaid bore'under the influence r. of said spring, said cup and said resilient 1 disc providing anon-deformable valve having 5 a yieldable surf-ace presented for engagement 21A tire =valve, comprising a.

nism, embodying a cup of a greater diameter ithan' thereduced pjortionof said'bore, locat- V able 'Within said bore'only from the lower- W v units-casing, a-ha'vingja long tudinal :bore, a portionof-saidendthereof,-said cnpwhe nsaid mechanism is positioned Within said bore be ng in juxta position to saidvalve-seat, a disc of resilient materiathavingpa pin extending: centrally theitethrough, and'o'fa'diameter corre'sponc -1 ingto the internal diameter v of said cup,

adaptedi tobe insertedfrom the upperend of said bore and'pressed through the reduced --portion thereof in deformable contact with its defihingv'vall, for seating within said cup,1

inengagementwith the base and inner surface of the rim thereof, said disc forming the seatengagingsurface of'the valve; V 3. 'A valve for-tires and other 'air conta-iners havlnga casing'provided'with'a longitudi-' 

